Carbureter.



C. B. STURGBS.

GARBURETBR.

APPLIoATIoN FILED APB. 22, 1907.

Patented Apr. 20, 1909.

wth/coges STATES PATENT OFFICE.

' CLARENCE B. STURGES, OF SCRANTON, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO J. GARDNER SANDERSON, OF SCRANTON, PENNSYLVANIA.

CARBU'RETER.

Specification of Letters Patent.

PatentedApril 20, 1909.

To all 'whom it may concern:

Be it-known that I, CLARENCE B. STURGns, a 'citizen of the United States, residing at Scranton, in the countyof Lackawanna, in the State of Pennsylvania., have invented a certain new and useful Im rovement in Car- 'bureters, of which the fo owing is a specification. v T This invention relates to carbureters for 16 gas engines.

*Gasolene engine manufacturers and automobile builders have found that to get a thoroughmixture, which is very essentlal to the smooth running of an engine, a vaporization of the gasolene with a certain proportion of air is required. To accomplish this, nearl all the carbureters are provlded. with a fue nozzle and a float, the latter of which .keeps the asolene just at the top 'of the fuel nozzle wit out overflowing, j The air, rush- -ing by the fuel nozzle, draws Vout the gasolene and mixes lwith it. This form of carbureter is ob'ectionable for use on automobiles as the gaso venele'r'felin the fuel nozzle changes as the automobile moves on different grades. Further, the float sometimes sticks and works hard. Thus, in both instances, the proportion of air and gasolene in the mixture is varied. A still further reason that the proportion of air and gasolene varies is v .that the size of the gasolene discharge open- .ing remains the same,that is, it `does not increase `when the amount of air increases and decreasewhen the amount of air decreases. Conso uently, when the air is predominant, a knoc takes laee at the end of the power stroke due to t e too rapid fall of pressure in thecylinder and when the gasolene is predominant it carbonizes in'the cylinders.

The object of my invention is t provide a carbureter that will always maintain the yMS same and proper proportion of air and gasolene in the ex lesive mixture.

Other and rther obj ects of my invention will appear in the following description and will be more particularly pointed out inthe -ap nded olalms.

v n the drawings, Figurel is a side elevation, of my invention. Fig. 2 is a vertical section on line 2 2, Fig. 4. Fig. 3 is a vertilsection on line 3-3, Fig. 4. Fig. 4 is a Ahorizontal section on line 4--4, Fig. 2.

Referrin more .plarticularly to the drawings, Lin 'cates t e gasolene supply pi e having a-vertiealdischarge 2 Vat right ang es pharge, so as to act as an ejector for the gasoene.

v The constantly o en air chamber 4 is constantly open to and ischarges, by means of its mouth 5, into a second air chamber 6. This second air chamber is of cup-shaped formation and has depending therein a mixing chamber 7 As a method of manufacturing the carbureter, the air chamber 6 may be cast in one cup-shaped piece, while the mixing chamber may be cast, onto a plate S which forms the top of air chamber 6, this top being dprovided with an opening 9 having an inwar y seating valve 10. Valve 10 is held normall closed by a helical spring 11, the tension o which ma be regulated by nut 12 on a screw threade rod 13 which 1s secured to the valve 10 and passes through a s c amber 7 communicates with the valved air chamber 6 by'means of a contracted opening' or passage 15 formed b a iiange 16 depending from the mixing c amber directly over the contracted discharge 5 of the constantly open air chamber 4, the mouth or inlet of the mixing chamber 7 being of greater diameter than that of the! discharge 5. The mixing chamber is provided with an outlet 17 which may be connected to the cylinder of an explosive engine so `that the cylinder is constantly open to the mixing chamber.

The gasolene sup ly is controlled through a rod 18 having its ower end provided with an elongated tapering needle 19 of a length -in plate 8, said o eningrpermixtting access to the mixing cham er. e adjustment ofthe sleeve is under the control of the-operator by means vof a lever 25 pivoted intermediate of its ends to a bifurcated plug 26 fitting in the outer end of the sleeve. The lever is pivoted at one of its'ends to one end of a link 27, the Vother end of the link being pivoted at 28 to pider 14 supported on top of 8. The mixing 2o vthe sleeve 21 axially and that the amount of mixture admitted to the en me is reguL f open to the working cylinder.

' ing form, it is apparent that the size ofthe.

operator.

lever 25 is depressed in any suitable manner as for instance by'breaking the joint of a toglgle 29 which is pivotallyvconnected to this en".;of the lever and to the plate 8. rlhe toggle is broken by a reciprocatory rod whlch is controlled in 'any suitable manner by the Rod 18 carries a disk 23 which is rigidly secured to the rod within the mixing chamber andis positioned so as to actas a valve to close the inlet 15 when the gasolene discharge 2 is closed 'or when the -sleeve 21 is lowered vto throttle the supply of gas to the engine. The rod 18 is held in a position to close the gasolene discharge and the mix ing chamber inlet by a vhelical spring 24 which bears at its upper end` against the sleeve. 21. It-is a parent that the tension of this spring may be regulated by adjusting lated by the movement of the s eeve.

The operation of my invention is asiellows: The needle valve is opened when the tion is created in the working cylinder of the engine, as "the mixing chamber is constantly This is due to the fact that the suction will act on the disk 23 and move the rod 18 against the action of the spring 24. vlf the suction=is great', the needle valve will be drawna great distance out of the vgasolene discharge and vice versa. As the needle valve is of tapergasolene ldischarge will be proportional yto the suction. When the' needle valve opens the gasolenedis'charge, the suctionacts on the air within the chamber 6, creates a V vatuum therein and thereby' drawinggair from the air chamber 4.v vThe air chamber -4 having a contracted mouth 5 surrounding vthe gasolene discharge 2, causes the air to pass by the' gasolene .discharge with great force like an ejector and to taire an amount of gasolene,'this amount being dependent upon the suction which controls the size 4ot the gasolene discharge. Should the suction be very great, the valve 1() will open and admit an additional air supply This valve 10 being regulable, it isapparent that the :movement ofl the vdislrma'yr be *controlled thereby and consequently the opening of the gasolene supply controlled.v -It will be noted that I thus provide a divided air supply, one

branch of which mixes with thel gasolene,

and-the other branch of which mixes with the mixture; v The mixture of a-ir and gasolene, after passing through passage 15l strikes the disk 23 which causes a disintegration-'of any small particles of gasolene and aI conseuent thorough mixture.` vFrom the mixing c amber it passes through the outlet 17 yto the engine.

Of course the air supply chamber- 4 may.

Shaadi "chamber' instead of Iseparate .t erefrng;

be formed integral with 'the 'cu' as shown in the drawings. Further,""the particular form or shapeoil in the drawings may be varie Having thus described ymy invention, 'n what I claim anddesire to secure by Letters Patent is: 1. The combinationwith'a gasolene suparts shown ply pipe provided with a nozzle,- of an air; supply chamber surrounding the'` gasolene! mouth a ttle above themouth of'saidnoza zle, asecond air chamber into fwhich-theair and the .gasolene; are discharged,' a@ needle valve for regulating the flow ogasolene. to the-second air chamberyaniia suction voper?- and diskbeing'carried by thesame rod; l

2. The combination Witha asolene supply pipe provided with anozzl e; of sa* valve for controllingfthel'ilow of gasolene therefrom, an-open air-chamber. surrounding 'the gasolene supply pipeand provided With-'a supply pipeand provided with a contracted 'l contracted disch'ar'geopenmg above said nozzle, a valved `air chamber into -Which'the gasolene and air are delivered, ka mixing chamber, and "a suction operated. -valve 4adapted to control the ilom'of gasolene and air from the valvedgair' ehamber to the mixing chamber the valve for --controlling v the lo'w of gasolene from' the'g'a'solene .supply pipe beinggperated by Said suctionloperated Valve-Iv A.

3. The combinationwith the asolene-supply pipe'provided with a noz e, vof'jan air supp y pipe, surrounding the ".same` and adapted `to form an ejector for'th'e gasolene above saidl nozzle an air chamberinto which the gasolene and airare discharged, asuetion controlled disk for controlling the 'ilow of gasolenel and `air from said air chambery said dis-k bein provided with a'needle valve whereby `the ischarge of gasolene from its pipe is regulated to correspond to thedegree oi suctionA in the engine cylinder. l

4. The combination with a `asolene supply pipe provided with a'noz'z e; of an alrsupply chamber inclosin" :said supplypipe; another air supply cham er above the'flrstmentioned vair-chamber and provided-with an upper discharge opening," a contracted discharge-opening' forming a communicatf channel between said air-chambers alii adapted to act as an ejectorv for the 'gasol'ene from its pipe; anda suctioneoperated valve normallyv closing said'v upper ldischarge openmg and provided ywith means for shut-tingl 0H the supply of gasolene when in'its norgnally close position'.

5. The combination. with a gasolene supply` ipeprovided with a nozzle; of an ai'r l supp y pipe acting as an ejector for the noz- .opening through which the mixture is delivered thereinto; a valved inlet in said air chamber whereby a supplemental admission of airis provided for; a mixing chamber communicating with the valved air-supply chamber., and a suction-operated valve normally closing -said communication and provided With a needle valve whereby the ilow of gasolene is regulated-to correspond with the amount of opening of the suction operated valve.

6. The combination with a gasolene supply pipe, of an air supply pipe, acting as an -e`ector for the gasolene supply pipe, an air c amber, above said ejector and provided with a supplemental air-inlet, a mixing chamber having a flange depending down- Wardly-into the air chamber and formingV a passage for the mixture delivered from the air chamber, and a suction valve mounted above the flanged opening to control the flow of mixture therethrough.

7. The combination with a asolene supply-pi e and a suction control ed valve for contro ing the flow of gasolene therefrom;

4'of upper and lower air-su ply chambers,

said ower chamber being a apted to act as an ejector for the gasolene supply and said upper chamber being adapted to provide a supplementary supply of air to the mixture; a mixing chamber above said air chambers and adapted to receive the mixture there-l from; andmeans connected with said suction-controlled valve for controlling the flow of mixture into said mixing chamber.

' 8. The combination with a gasolene supply pipe, of a mixing chamber above the same and provided with a depending llanged openingfor receiving the gasolene from its supplypipe; a suction valve for controlling the flow of gasolene and air through the flanged opening; and a source oi' air supply divided into two branches, one of which acts as an ejector for the gasolene from its supply pipe and the other of which introduces air into the mixture so formed.

9. The combination with a vertical gasolene supply pipe provided with a nozzle g. of an air-supply ipe provided with an ejector above the nozz' e of the gasolene supply pipe, a suction controlled valve varying the size of the discharge opening in the gasolene supply pipe and a valved air chamber for supplying additional air to the mixture in such manner as to cause a regulation in the flow of gasolene.

10. The combination with a gasolene su ply pipe, of a constantly open air supp y pipe, acting as an ejector to the gasolene'supply pipe, a mixing chamber, a valve controling the inlet to the mixing chamber and carrying a needle valve for controlling the discharge of gasolene from its pipe, and avalved air chamber interposed between the-.first air .supply and the mixing chamber.

11. The combination with a gasolene supp ly pipe, of 4an air supply pipe ac ting as' an ejector for the gasolene supply pipe, a suction controlled valve for controllin T the supply ofgasolene, and means for regulating the movement of the .suction controlled valve, said means comprising a sleeve carried by the valve-rod of said suction-valve a` spring also mounted on said valve rod between the sleeve andthe valve, an oscillatable rod pivoted thereto, and means, for oscillating said rod'.

12. The combination with a gasolene supply-pipe provided with a nozzle,- of an air supply pipe acting as an ejector for said nozzle; a suction-controlled valve for controlling the gasolene supply; and I'neans for regulating the movement of the suction-controlled valve, said means comprising a sleeve slidably mounted upon the stem of said suctioncontrolled valve, a resilient member interosed between said sleeve and the valve, a ever pivotally connected with said sleeve, and a toggle for moving said lever.

13. The combination with a gasolene supply pipe, of a constantly open air supply acting as an ejectorto the gasolene supply, a mixing cha1nben,' a valve provided with a valve rod for controlling the inlet to the mixing chamber, a sleeve slidable on the valve rod, a spring mounted on said valve CLARENCE B. STURGES.

In presence'ol two witnesses- GARDNER SANmmsoN,

FRANK R. STOCKER. 

